queueName - the name of the queue that is reaching the maximum number of allowed events.
currentSize - the number of events in the queue.
maxSize - the maximum number of allowed events in the queue.
The Distributed Gateway is almost full. When full, the Distributed Gateway will discard events.
This is likely due to CPU limitations. If running within an OpenShift cluster, it would help to allocate more nodes to the Distributed Gateway and restart to ensure the workload re-balances. If running in the standalone installation, a larger machine may be necessary.